Castle Cornelia

 is the final location in Chapter 1: Blank Slate and contains the Plains of Cornelia's Teleport Stone.

Completing  unlocks Chapter 2: Hope and Prophecy and the path to Valley of Trials.

Drops

 * Dust Soldier (Fire)
 * Dust Ripper (Wind)
 * Grudge Fighter (Fire)
 * Grudge Ranger (Wind)
 * Grudge Shaman (Water)
 * Dust Mage (Water)
 * Dust Gigas
 * Dust Hunter (Wind)